https://github.com/jccampagne/gojulia

Julia embedding in Go
https://github.com/jccampagne/gojulia

cgo demo fun go golang goroutines julia julia-embedding learning-by-doing

Last synced: about 12 hours ago
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Julia embedding in Go

• Host: GitHub
• URL: https://github.com/jccampagne/gojulia
• Owner: jccampagne
• Created: 2019-06-03T22:18:32.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-02-02T20:30:20.000Z (almost 5 years ago)
• Last Synced: 2023-03-30T09:19:53.449Z (almost 2 years ago)
• Topics: cgo, demo, fun, go, golang, goroutines, julia, julia-embedding, learning-by-doing
• Language: Go
• Size: 6.84 KB
• Stars: 6
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md

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README

        
# About

Simple examples showing how to embed Julia in Go.

# Requirements

Julia, Go, Make.

`go`, `julia` and `julia-config.jl`  in your path.

You will probably have to add `julia-config.jl` to your PATH. Julia config tool on macOS, using Julia installed with [brew](https://brew.sh) is located here:

```

/Applications/Julia-1.2.app/Contents/Resources/julia/share/julia/julia-config.jl

```

# Run the examples

This was tested on macOS, but should also work on Linux.

A makefile is provide for convenience, just type:

```

make

```

This will compile the examples and run them (note: one of the example will fail on purpose).

# Description

There are 3 examples:

1. `gjl.go`: very simple example

1. `gjl_goroutines.go`: executing julia code from 2 different goroutines with synchronisation.

1. `gjl_goroutines_fail.go`: same as above example, but demonstrate failure when accessing julia from multiple goroutine without synchronization.

# C binding

Julia is embedding in Go using cgo and a couple of C binding files: `gjl.h` and `gjl.c`.

These files provide function wrappers around [Julia C API](https://docs.julialang.org/en/v1/manual/embedding/index.html) that are defined C macros in Julia. Cgo cannot use C macros directly. For example [jl_typeof(v)](https://github.com/JuliaLang/julia/blob/d249e71ef2fd59acd557f2f6c9688253f4b5a47d/src/julia.h#L107) is a macro.

# References

* [cgo](https://golang.org/cmd/cgo/)

* [Embedding Julia](https://docs.julialang.org/en/v1/manual/embedding/index.html)

* [julia.h](https://github.com/JuliaLang/julia/blob/master/src/julia.h)